contrapositionn.
英 kɒntrəpə'zɪʃ(ə)n | 美 ,kɑntrəpə'zɪʃən
中文n. 对置，对位；[数] 换质位
词根词源
contraposition (n.)1550s, from Late Latin contrapositionem (nominative contrapositio), noun of action from past participle stem of contraponere, from contra "against" (see contra) + ponere "to put, place" (past participle positus; see position (n.)).
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